Hydrogen sensing performance of Pt-oxide-GaN Schottky diode

Y. Y. Tsai; K. W. Lin; Huey-Ing Chen; C. W. Hung; T. P. Chen; Wen-Chau Liu

doi:10.1049/el:20072041

Hydrogen sensing performance of Pt-oxide-GaN Schottky diode

Y. Y. Tsai, K. W. Lin, Huey-Ing Chen, C. W. Hung, T. P. Chen, Wen-Chau Liu

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

An interesting Pt-oxide-GaN MOS-type Schottky diode hydrogen sensor with high-sensitivity hydrogen detection over a wide operating temperature regime is demonstrated. Experimentally, a voltage shift of 264.4mV at a forward current of 1mA is obtained under 5040ppm H₂/air gas. Also, a large current variation of 0.89mA in magnitude between air and 5040ppm H₂/air gas is observed under a forward voltage of 0.2V. Under an inert environment (N ₂), a so-called Temkin isotherm can be used to interpret the hydrogen adsorption behaviour at the Pt-oxide interface.

Original language	English
Pages (from-to)	1192-1194
Number of pages	3
Journal	Electronics Letters
Volume	43
Issue number	22
DOIs	https://doi.org/10.1049/el:20072041
Publication status	Published - 2007 Oct 30

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

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Tsai, Y. Y., Lin, K. W., Chen, H-I., Hung, C. W., Chen, T. P., & Liu, W-C. (2007). Hydrogen sensing performance of Pt-oxide-GaN Schottky diode. Electronics Letters, 43(22), 1192-1194. https://doi.org/10.1049/el:20072041

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abstract = "An interesting Pt-oxide-GaN MOS-type Schottky diode hydrogen sensor with high-sensitivity hydrogen detection over a wide operating temperature regime is demonstrated. Experimentally, a voltage shift of 264.4mV at a forward current of 1mA is obtained under 5040ppm H2/air gas. Also, a large current variation of 0.89mA in magnitude between air and 5040ppm H2/air gas is observed under a forward voltage of 0.2V. Under an inert environment (N 2), a so-called Temkin isotherm can be used to interpret the hydrogen adsorption behaviour at the Pt-oxide interface.",

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AU - Chen, T. P.

AU - Liu, Wen-Chau

PY - 2007/10/30

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